Sajin
It's normal. Why? Because protections are bulit into the three normal vbios that the card ships with. You want no pwr throttle you run xoc 1000w vbios. :)
I would actually argue that in some cases this isn't true. It seems like it just removes whatever check is being done because without significant tweaking it can actually perform a lot worse than with the power limit constantly being pegged. There have been many reports of people getting clocks stable around 2100+ and scores severely dropping, indicating to me that the check being removed is causing whatever actually was the cause of the power limit to exceed a thermal spec causing significantly worse performance.